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MTD 12A-979L402 lawn mower Parts
Here are the diagrams and repair parts for MTD 12A-979L402 lawn mower, as well as links to manuals and error code tables, if available.
Owner’s manualBy Schematic
By Part
SELECT DIAGRAM
Browse Parts for 12A-979L402 Walk-Behind Mowers
21" deck/handle/front axle cover diagram
Control Cable
Part #746-1131Replaced by #946-1131
Manufacturer substitutionThis part replaces 746-1131. Substitute parts can look different from the original.This item is not returnableIn Stock$60.07
Qty
Chain/pulley/rear axle/bag diagram
Pivot Arm
Part #682-0531Replaced by #682-0531-0637
Manufacturer substitutionThis part replaces 682-0531. Substitute parts can look different from the original.In Stock$68.60Qty21" deck/handle/front axle cover diagram
Lawn & Garden Equipment Carriage Bolt
Part #710-0167Replaced by #710-05177
Manufacturer substitutionThis part replaces 710-0167. Substitute parts can look different from the original.This item is not returnableIn Stock$8.91QtyChain/pulley/rear axle/bag diagram
Upper Frame
Part #747-0937Replaced by #747-0937-0637
Manufacturer substitutionThis part replaces 747-0937. Substitute parts can look different from the original.$87.126% OFF Phone Price : $93.12
QtyRatchet
Part #748-0318Replaced by #948-0318
Manufacturer substitutionThis part replaces 748-0318. Substitute parts can look different from the original.This item is not returnableIn Stock$19.919% OFF Phone Price : $21.91QtyChain/pulley/rear axle/bag diagram
Nut
Part #738-0529Replaced by #938-0529
Manufacturer substitutionThis part replaces 738-0529. Substitute parts can look different from the original.In Stock$20.66Qty21" deck/handle/front axle cover diagram
Hub Cap
Part #731-1426
The manufacturer no longer makes this part, and there's no substitute part
Chain/pulley/rear axle/bag diagram
Thrust Bearing
Part #741-0690
The manufacturer no longer makes this part, and there's no substitute part
21" deck/handle/front axle cover diagram
Bracket
Part #16864
The manufacturer no longer makes this part, and there's no substitute part
21" deck/handle/front axle cover diagram
Axle Cover
Part #731-1829
The manufacturer no longer makes this part, and there's no substitute part
Most common symptoms to help you fix your walk-behind mowers
Choose a symptom to see related walk-behind mower repairs.
Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…
Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…
Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…
Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…
Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…
Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…
Repair guides for gas walk-behind mowers
These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.
How to replace a lawn mower front deck tray
Learn how to replace the front deck tray on your lawn mower if it's cracked or damaged.…
Repair time and Difficulty
60 minutes or less
How to replace a lawn mower transmission
Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…
Repair time and Difficulty
60 minutes or less
How to replace a lawn mower flywheel key on a flathead engine
When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…
Repair time and Difficulty
45 minutes or less
Effective articles & videos to help repair your walk-behind mowers
Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.
Wondering when to mow your lawn for the best results? Timing matters more than you might think. Discover the best time o…
Learn about the top 10 must-have electric lawn & garden tools for 2023…
Learn about the different kinds of mower blades and how to maintain them.…
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